Pool Services
Professional pool care — done personally by John Cossey.
Blue Island Pool Service offers complete pool care for homeowners in Hanford and the surrounding Central Valley. Every service is performed personally by John Cossey — no crews, no shortcuts.
Weekly Pool Cleaning & Maintenance
Regular scheduled visits to skim, brush, vacuum, and chemically balance your pool water. Consistent maintenance keeps your pool safe, clear, and ready to swim in all season long.
Water Chemistry Balancing
Proper water balance goes far beyond just adding chlorine. John tests and adjusts pH, alkalinity, calcium hardness, and sanitizer levels to prevent scaling, etching, and staining — extending the life of your plaster and tile.
Pool Equipment Repair
Pumps, filters, heaters, and automation systems — John diagnoses and repairs pool equipment to keep everything running efficiently. Catch problems early before they become expensive replacements.
Green Pool Cleanup
Has your pool turned green? John can restore it to crystal-clear water with a thorough shock treatment, algae removal, and full chemical rebalance.
Filter Cleaning & Maintenance
Clean filters are essential for water clarity and equipment longevity. John cleans and inspects cartridge, sand, and DE filters on a regular schedule.
Pool Inspections
Thinking about buying a home with a pool? John provides thorough pool inspections to identify any issues before you close the deal.
Ready to Get Started?
Call or text John today to schedule service for your pool.
(559) 380-8886Monday – Friday: 8am – 5pm